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### 16 Cards in this Set

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 How does one convert from fahrenheit (F) to Celsius (C)? T(F)=(9/5)T(C)+32 fahrenheit = (9/5)Celsius plus 32. How does one convert from Celsius to Kelvins (K)? T(K) = T(C)+273 (rounded) What does the symbol Q stand for in thermal physics? Amount of heat is represented by Q. What does the symbol c stand for in thermal physics? C is the specific heat of a material. What is the euqation that connects the amount of heat with a temperature? In other words, how much heat does a material have with a specific temperature? Q=mc▲T Heat (in joules) is mass * specific heat * change in temperature. What equation gives us the heat required to change the phase of an object? Q=mL where L is the latent heat of transormation. What equation tells us how much an object expands? ▲L = α(Li)▲T change in length = α (coefficient of linear expansion) * initial length * change in temperature. What equation gives us the change in volume? ▲V = β(Vi)▲T change in volume = β (coefficient of colume expansion) * initial volume * change in temperature Equation to find pressure? P = F/A Pressure = Force/Area P is measures in pascals (N/m²) What is the Ideal Gas Law? PV = nRT Tip: remember by its name: PivNirt. Equation for velocity of gas molecules? v = sqrrt[(3RT)/M] velocity = square root of three * R * Temperature / Molecular Mass Work is done when volume changes. What is the equation to find work? W = P▲V If volume is constant, then the energy needed to change the temperature of a certain # of moles is... Q = n(Cv)▲T where Cv is the molar heat capacity at constant volume If pressure is constant, then the energy needed to change the temperature of a certain # of moles is... Q = n(Cv)▲T where Cv is the molar heat capacity at constant pressure Change in Potential Energy = ▲U = Q - W How do you find the efficiency of an engine? 1) W=Qh-Qc 2) e=W/Qh